package ru.arriah.servicedesk.web.executor.action;

import java.io.IOException;
import java.util.Collection;
import java.util.Iterator;

import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import ru.arriah.common.web.action.ActionMapping;
import ru.arriah.common.web.action.DumbAction;
import ru.arriah.servicedesk.bean.RequestBean;
import ru.arriah.servicedesk.bean.TaskBean;
import ru.arriah.servicedesk.ejb.RequestManagerLocalHome;
import ru.arriah.servicedesk.ejb.RequestManagerLocalObject;
import ru.arriah.servicedesk.help.Utils;
import ru.arriah.servicedesk.web.commonaction.exception.InternalException;
import ru.arriah.servicedesk.web.commonaction.exception.PrivilegesException;

public class DisplayRequestDetailsAction extends DumbAction {
   protected RequestManagerLocalHome requestManagerHome;
   
   public DisplayRequestDetailsAction() throws NamingException {
      super();

      requestManagerHome =
         Utils.getRequestManagerHomeInterface();
   }

   public String execute(
      ActionMapping actionMapping,
      HttpServletRequest request,
      HttpServletResponse response
   ) throws IOException, ServletException {
     try {

       int requestId = idVal(request.getParameter("request_id"));
       int userId = Utils.getUserId(request); 
          
       RequestManagerLocalObject requestManager = 
         requestManagerHome.create();
                                                    
       RequestBean requestBean = 
          requestManager.selectRequestDetails(requestId);
       
       Collection<TaskBean> tasksList = 
          requestManager.selectTasksByRequest(
             requestId,
             "executor",
             "ASC"
          );
       
       Iterator i = tasksList.iterator();
       boolean permission = false;
       
       while (i.hasNext() && !permission) {
          int id = ((TaskBean)i.next()).getEmployeeId();
          if (id == userId) permission = true;              
       }
       
       if (permission) {
          request.setAttribute("status", "task_executor");
       } else
          throw new PrivilegesException ("Access denied");       

       request.setAttribute("requestBean", requestBean);
       request.setAttribute("tasksList", tasksList);
                    
       requestManager.remove();                                                 
       return actionMapping.getSuccessTarget();
    } catch (Exception e) {
       handleException(e, "execute");
       throw new InternalException("ErrorMessage.internal");
    }
  }
}